1 // SPDX-License-Identifier: GPL-2.0-only 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* 2 /*
3 * System call table mapper 3 * System call table mapper
4 * 4 *
5 * (C) 2016 Arnaldo Carvalho de Melo <acme@red 5 * (C) 2016 Arnaldo Carvalho de Melo <acme@redhat.com>
6 */ 6 */
7 7
8 #include "syscalltbl.h" 8 #include "syscalltbl.h"
9 #include <stdlib.h> 9 #include <stdlib.h>
10 #include <linux/compiler.h> 10 #include <linux/compiler.h>
11 #include <linux/zalloc.h> 11 #include <linux/zalloc.h>
12 12
13 #ifdef HAVE_SYSCALL_TABLE_SUPPORT 13 #ifdef HAVE_SYSCALL_TABLE_SUPPORT
14 #include <string.h> 14 #include <string.h>
15 #include "string2.h" 15 #include "string2.h"
16 16
17 #if defined(__x86_64__) 17 #if defined(__x86_64__)
18 #include <asm/syscalls_64.c> 18 #include <asm/syscalls_64.c>
19 const int syscalltbl_native_max_id = SYSCALLTB 19 const int syscalltbl_native_max_id = SYSCALLTBL_x86_64_MAX_ID;
20 static const char *const *syscalltbl_native = !! 20 static const char **syscalltbl_native = syscalltbl_x86_64;
21 #elif defined(__i386__) <<
22 #include <asm/syscalls_32.c> <<
23 const int syscalltbl_native_max_id = SYSCALLTB <<
24 static const char *const *syscalltbl_native = <<
25 #elif defined(__s390x__) 21 #elif defined(__s390x__)
26 #include <asm/syscalls_64.c> 22 #include <asm/syscalls_64.c>
27 const int syscalltbl_native_max_id = SYSCALLTB 23 const int syscalltbl_native_max_id = SYSCALLTBL_S390_64_MAX_ID;
28 static const char *const *syscalltbl_native = !! 24 static const char **syscalltbl_native = syscalltbl_s390_64;
29 #elif defined(__powerpc64__) 25 #elif defined(__powerpc64__)
30 #include <asm/syscalls_64.c> 26 #include <asm/syscalls_64.c>
31 const int syscalltbl_native_max_id = SYSCALLTB 27 const int syscalltbl_native_max_id = SYSCALLTBL_POWERPC_64_MAX_ID;
32 static const char *const *syscalltbl_native = !! 28 static const char **syscalltbl_native = syscalltbl_powerpc_64;
33 #elif defined(__powerpc__) 29 #elif defined(__powerpc__)
34 #include <asm/syscalls_32.c> 30 #include <asm/syscalls_32.c>
35 const int syscalltbl_native_max_id = SYSCALLTB 31 const int syscalltbl_native_max_id = SYSCALLTBL_POWERPC_32_MAX_ID;
36 static const char *const *syscalltbl_native = !! 32 static const char **syscalltbl_native = syscalltbl_powerpc_32;
37 #elif defined(__aarch64__) 33 #elif defined(__aarch64__)
38 #include <asm/syscalls.c> 34 #include <asm/syscalls.c>
39 const int syscalltbl_native_max_id = SYSCALLTB 35 const int syscalltbl_native_max_id = SYSCALLTBL_ARM64_MAX_ID;
40 static const char *const *syscalltbl_native = !! 36 static const char **syscalltbl_native = syscalltbl_arm64;
41 #elif defined(__mips__) <<
42 #include <asm/syscalls_n64.c> <<
43 const int syscalltbl_native_max_id = SYSCALLTB <<
44 static const char *const *syscalltbl_native = <<
45 #elif defined(__loongarch__) <<
46 #include <asm/syscalls.c> <<
47 const int syscalltbl_native_max_id = SYSCALLTB <<
48 static const char *const *syscalltbl_native = <<
49 #else <<
50 const int syscalltbl_native_max_id = 0; <<
51 static const char *const syscalltbl_native[] = <<
52 [0] = "unknown", <<
53 }; <<
54 #endif 37 #endif
55 38
56 struct syscall { 39 struct syscall {
57 int id; 40 int id;
58 const char *name; 41 const char *name;
59 }; 42 };
60 43
61 static int syscallcmpname(const void *vkey, co 44 static int syscallcmpname(const void *vkey, const void *ventry)
62 { 45 {
63 const char *key = vkey; 46 const char *key = vkey;
64 const struct syscall *entry = ventry; 47 const struct syscall *entry = ventry;
65 48
66 return strcmp(key, entry->name); 49 return strcmp(key, entry->name);
67 } 50 }
68 51
69 static int syscallcmp(const void *va, const vo 52 static int syscallcmp(const void *va, const void *vb)
70 { 53 {
71 const struct syscall *a = va, *b = vb; 54 const struct syscall *a = va, *b = vb;
72 55
73 return strcmp(a->name, b->name); 56 return strcmp(a->name, b->name);
74 } 57 }
75 58
76 static int syscalltbl__init_native(struct sysc 59 static int syscalltbl__init_native(struct syscalltbl *tbl)
77 { 60 {
78 int nr_entries = 0, i, j; 61 int nr_entries = 0, i, j;
79 struct syscall *entries; 62 struct syscall *entries;
80 63
81 for (i = 0; i <= syscalltbl_native_max 64 for (i = 0; i <= syscalltbl_native_max_id; ++i)
82 if (syscalltbl_native[i]) 65 if (syscalltbl_native[i])
83 ++nr_entries; 66 ++nr_entries;
84 67
85 entries = tbl->syscalls.entries = mall 68 entries = tbl->syscalls.entries = malloc(sizeof(struct syscall) * nr_entries);
86 if (tbl->syscalls.entries == NULL) 69 if (tbl->syscalls.entries == NULL)
87 return -1; 70 return -1;
88 71
89 for (i = 0, j = 0; i <= syscalltbl_nat 72 for (i = 0, j = 0; i <= syscalltbl_native_max_id; ++i) {
90 if (syscalltbl_native[i]) { 73 if (syscalltbl_native[i]) {
91 entries[j].name = sysc 74 entries[j].name = syscalltbl_native[i];
92 entries[j].id = i; 75 entries[j].id = i;
93 ++j; 76 ++j;
94 } 77 }
95 } 78 }
96 79
97 qsort(tbl->syscalls.entries, nr_entrie 80 qsort(tbl->syscalls.entries, nr_entries, sizeof(struct syscall), syscallcmp);
98 tbl->syscalls.nr_entries = nr_entries; 81 tbl->syscalls.nr_entries = nr_entries;
99 tbl->syscalls.max_id = syscalltbl_ 82 tbl->syscalls.max_id = syscalltbl_native_max_id;
100 return 0; 83 return 0;
101 } 84 }
102 85
103 struct syscalltbl *syscalltbl__new(void) 86 struct syscalltbl *syscalltbl__new(void)
104 { 87 {
105 struct syscalltbl *tbl = malloc(sizeof 88 struct syscalltbl *tbl = malloc(sizeof(*tbl));
106 if (tbl) { 89 if (tbl) {
107 if (syscalltbl__init_native(tb 90 if (syscalltbl__init_native(tbl)) {
108 free(tbl); 91 free(tbl);
109 return NULL; 92 return NULL;
110 } 93 }
111 } 94 }
112 return tbl; 95 return tbl;
113 } 96 }
114 97
115 void syscalltbl__delete(struct syscalltbl *tbl 98 void syscalltbl__delete(struct syscalltbl *tbl)
116 { 99 {
117 zfree(&tbl->syscalls.entries); 100 zfree(&tbl->syscalls.entries);
118 free(tbl); 101 free(tbl);
119 } 102 }
120 103
121 const char *syscalltbl__name(const struct sysc 104 const char *syscalltbl__name(const struct syscalltbl *tbl __maybe_unused, int id)
122 { 105 {
123 return id <= syscalltbl_native_max_id 106 return id <= syscalltbl_native_max_id ? syscalltbl_native[id]: NULL;
124 } 107 }
125 108
126 int syscalltbl__id(struct syscalltbl *tbl, con 109 int syscalltbl__id(struct syscalltbl *tbl, const char *name)
127 { 110 {
128 struct syscall *sc = bsearch(name, tbl 111 struct syscall *sc = bsearch(name, tbl->syscalls.entries,
129 tbl->sysc 112 tbl->syscalls.nr_entries, sizeof(*sc),
130 syscallcm 113 syscallcmpname);
131 114
132 return sc ? sc->id : -1; 115 return sc ? sc->id : -1;
133 } 116 }
134 117
135 int syscalltbl__id_at_idx(struct syscalltbl *t <<
136 { <<
137 struct syscall *syscalls = tbl->syscal <<
138 <<
139 return idx < tbl->syscalls.nr_entries <<
140 } <<
141 <<
142 int syscalltbl__strglobmatch_next(struct sysca 118 int syscalltbl__strglobmatch_next(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
143 { 119 {
144 int i; 120 int i;
145 struct syscall *syscalls = tbl->syscal 121 struct syscall *syscalls = tbl->syscalls.entries;
146 122
147 for (i = *idx + 1; i < tbl->syscalls.n 123 for (i = *idx + 1; i < tbl->syscalls.nr_entries; ++i) {
148 if (strglobmatch(syscalls[i].n 124 if (strglobmatch(syscalls[i].name, syscall_glob)) {
149 *idx = i; 125 *idx = i;
150 return syscalls[i].id; 126 return syscalls[i].id;
151 } 127 }
152 } 128 }
153 129
154 return -1; 130 return -1;
155 } 131 }
156 132
157 int syscalltbl__strglobmatch_first(struct sysc 133 int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
158 { 134 {
159 *idx = -1; 135 *idx = -1;
160 return syscalltbl__strglobmatch_next(t 136 return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
161 } 137 }
162 138
163 #else /* HAVE_SYSCALL_TABLE_SUPPORT */ 139 #else /* HAVE_SYSCALL_TABLE_SUPPORT */
164 140
165 #include <libaudit.h> 141 #include <libaudit.h>
166 142
167 struct syscalltbl *syscalltbl__new(void) 143 struct syscalltbl *syscalltbl__new(void)
168 { 144 {
169 struct syscalltbl *tbl = zalloc(sizeof 145 struct syscalltbl *tbl = zalloc(sizeof(*tbl));
170 if (tbl) 146 if (tbl)
171 tbl->audit_machine = audit_det 147 tbl->audit_machine = audit_detect_machine();
172 return tbl; 148 return tbl;
173 } 149 }
174 150
175 void syscalltbl__delete(struct syscalltbl *tbl 151 void syscalltbl__delete(struct syscalltbl *tbl)
176 { 152 {
177 free(tbl); 153 free(tbl);
178 } 154 }
179 155
180 const char *syscalltbl__name(const struct sysc 156 const char *syscalltbl__name(const struct syscalltbl *tbl, int id)
181 { 157 {
182 return audit_syscall_to_name(id, tbl-> 158 return audit_syscall_to_name(id, tbl->audit_machine);
183 } 159 }
184 160
185 int syscalltbl__id(struct syscalltbl *tbl, con 161 int syscalltbl__id(struct syscalltbl *tbl, const char *name)
186 { 162 {
187 return audit_name_to_syscall(name, tbl 163 return audit_name_to_syscall(name, tbl->audit_machine);
188 } <<
189 <<
190 int syscalltbl__id_at_idx(struct syscalltbl *t <<
191 { <<
192 return idx; <<
193 } 164 }
194 165
195 int syscalltbl__strglobmatch_next(struct sysca 166 int syscalltbl__strglobmatch_next(struct syscalltbl *tbl __maybe_unused,
196 const char * 167 const char *syscall_glob __maybe_unused, int *idx __maybe_unused)
197 { 168 {
198 return -1; 169 return -1;
199 } 170 }
200 171
201 int syscalltbl__strglobmatch_first(struct sysc 172 int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
202 { 173 {
203 return syscalltbl__strglobmatch_next(t 174 return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
204 } 175 }
205 #endif /* HAVE_SYSCALL_TABLE_SUPPORT */ 176 #endif /* HAVE_SYSCALL_TABLE_SUPPORT */
206 177
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